Thermo hydrometer



Dec. E, w40. L. EDELMANN 2,223,483

THERMO HYDROMETER Filed Dec. 2, 1937 2 Sheets-Sheet l 'Deu 3, 94@ y L EDELMANN 2,223,483

THERMO HYDROMETER Filed Deo. 2,. 1937 2 Sheets-Sheet 2 MMMM;

Zea aelilfz/L A Patented Dec. 3, 194.0v

UNITED STATESl PATENT OFFICE THERMO HYDROMETEB Leo Edelmann, Chicago, Ill. Application December 2,1937, SerlalNo. 177,810

22 Claims.

-range and the temperature of the quantity of liquid being tested must be ascertained to permit calculations of the correction necessary to be made with respect to readings taken by a float Y element, or other indicating means, calibrated at a xed temperature.

An object of my invention is to provide a device of this character which has a liquid receiving and oat barrel with an extension housing carried at the intake end thereof and has a thermometer encased within th extension housing to thus be protected from the liquid, and yet has -a temperature responsive portion interposed to Lbe influenced by the temperature of the test quantity of liquid being taken into the liquid and float barrel.

Another object is to so construct and arrange` the parts that the test quantity of liquid is conducted i'rom the inlet end directly to the liquid '25 and float barrel, and the test liquid can be readreadily and quickly removed for assembling and' disassembling vthe parts for cleaning or other purposes, without the necessity of disturbing the vthermometer assembly. l

Yet another purpose is to so construct and associate the parts of my improved thermo hy- 40 drometer that the indicating portions of the thermometer and o'f the iloat element, or specic gravity indicator, are in substantially vertical alignment, when the instrument is in use, thus necessitating only the raising or the lowering of the eye to quickly, clearly' and accurately read Vthe indications of temperature and of specic gravity. l

With the above and other objects in view, which will be apparent to those skilled in the-art,l myv invention includes certain novel features of construction and combinations and arrangements and associations and assembly of parts, which will be hereinafter more fully described in connection with the drawings and then particularly 65 pointed out in the claims.

thereof calibrated and shown and designated -in In the` drawings: y ,r

Figure 1 is a perspective view looking at the l instrument from one side, as it will appear when vin use.

Fig. 2 isy an enlarged fragmentary longitudinal sectional View through the lower part of the intake end ofthe instrument as shown in Figure l.

Fig. 3 is a fragmentary longitudinal sectional view taken substantiallyl at right angles to the showing in Fig. 2, and illustrating the entire 10` intake portion and assembly as this is associated with a liquid and oat barrel.

Fig. 4 is a transverse sectional view taken substantially on line 4 4 of Fig. 3.

Fig. 5 is a transverse sectional view on line 5 5 of Fig. 3.

- Fig. 6 is -a transverse sectional View on line 6-6 of Fig. 3.

The liquid and iioat barrel I, which is of tubuf lar transparent material, such as cylindrical tu- 'bular glass,`is formed at one end to have a suc--- tion and compression bulb 2 connected therewith, and the other or intake end 3 is open.

A oat element 4, of -any desired type and form and construction, and having the indications any desired manner,l is located within the liquid barrel I. n.

' A coupling member 5, of soft rubber or other suitable material, is tted at the intake end 3 of the liquid and iioat barrel I, and this coupling member is also tted at onev end of'an extension housing 6, so that this extension housing is dlsposed substantially in axial valignment at the intake end of the barrel l. The extension housing has a tubular transparent barrel portion 1, which is madeof lglass tubing or of any other suitable material, andwhich has the extension end member 8, of soft rubber or other suitable material, connected at its, outer end. This extension o end member 8 is provided with a liquid receiving chamber 9, and a. lateral passage I0 leads through the sidewall of the member 8 to communicate with the bottom of the chambe'r 9. n

Closure members or stoppers il and l2 are iitted at the ends of the transparent barrels, and the closure member I2 is provided with an opening I3 through which the tube I4 `of a therf mometer or other temperature inuenced portion is tted, .the closure Il being provided with a recess I5 Ato receive and hold one end of the tube. As stated, the tube I4 is passed through the opening I3 'anda temperature iniiuenced portion Iii of the thermometer is disposed and exposed within the liquid receiving chamber 9. The open-v i ling I3 and recess I5 are conveniently positioned substantially centrally Within the stopper portions II and I2, and these stopper portionsxhave openings I1 and I8 formed therethrough and spaced from the opening and recess I3 and I5. A liquid conducting tube I9 is iitted and held in these openings I1 and' I8 to thus establish and provide a duct or passage through the barrel 1 and entirely out of communication with the middle portion ofthis barrel between the closures II and I2. It is perhaps preferable that grooves 20 and 2l be provided in the faces of the closure portions II and I2.

In the present instance I have shown the connectirg member 5 as provided with sleeve portions to receive and to lhold in liquid tight relation upon thebeaded ends of the liquid barrel I and the housing barrel 1, and it may be found desirable tov provide a partition wall 22 at the end of the liquid barrel to conne the float 5 therein. Where such a partition or stop wall is provided, an opening 23 is formed therethrough to establish free communication to the liquid conducting tube I9.

The extension end member 8, which is in eiect the lower end portion of the extension housing Vgenerally indicated at 6, preferably has the lower end 24 thereof attened or squared to permit the same to be rested and held upon a radiator shell, or any other convenient portion or structure, to thus support and steady the instrument with the two barrels in substantially perpendicular upright relation. 'I'he extension end member 8 is here illustrated as provided with a sleeve portion ttecl in liquid tight association over the beaded lower end of the transparent extension barrel 1, but it will be appreciated that this manner of construction and association of the member 8 with the barrel 1, and also the manner of association and connection of the barrel 1 with the barrel I, can be varied in various manners as now well known.

As stated, the extension end member 9 has a transverse passage Ii) opening laterally and communicating at-its inner end with the liquid receiving chamber 9, and this passage Iii is preferably curved upwardly at its inner lend to open into the bottom of the chamber 9. An intake nozzle tube 25, which may be made of metal tubing, or of any other suitable material or tubing, has the end 26 thereof curved to follow the upwardly extending curve of the passage I0, so that the inner end of the tube 2 5 opens. directly through the bottom of the liquid receiving chamber 9. At its outer end this nozzle tube 25 is 'bent or curved, as at 21, and a piece of rubber hose 29, or other exible tubing, is carried by this bent end 21.' Of course, the tube 25 and the tube 28 can be made as a unitaryconstruction, and the ltube 25 can be of hard-rubber and the tube 28`of soit flexible rubber, or of other suitable materials. As the tube 25 is bent or curved at its end v2t, and

I is fitted into a curved portion of the passage Iii,

vthis tube will at all times be assembled in proper relation, and the tube will be positively held againstv accidental or casual displacement. .At the same time, the tube 25 can be readily and quickly removed when desired, and the tube can be just as conveniently and expeditiously inserted oriit-A s ature iniiuenced means.

-shown immediately adjacent tol the indicating portion of tube Id of the thermometer or tempery A housing member 30 is conveniently associated and assembled with the temperature scale or temperature showing sheet 29, as illustrated in Fig. 4, and this housing member 3u closes around and shields the tube I9, and

at the same time provides a smooth semi-cylin-- drical vsurface to receive and show printed matter, or any other indication ormatter as desired.

With the parts constructed' andassociated as herein above set forth, the extension housing portion 6 has the closure membersV I I and I2 associated with the transparent barrel i, without1w thought of or necessity for removal or disassembly'of these parts, and the thermometer It, the tube I9, the thermometer scale sheet 29, and other portions within the transparent housing 1 are substantially sealed and(permanently connected in place, and are protected against ingress of liquid or moisturefrom any source, and against collection of dirtor other matter that might in anyway obscure a clear and free reading and view of parts within this barrel 1.v Also, the extension end member 8 canbe attached at the end of the transparent housing 1 with assurance that it need not be removed for cleaning or for any' other operations or purposes encountered in normal use ofthe instrument. Likewise, the coupling member 5 can be attached to the end of the barrel I and the parts assembled therewith, withoutl necessity for detachment of this coupling member.

As has been stated, the liquid and oat barrel I can .be attached at and associated with the coupling'member 5 with the thought and purpose in mind that these parts canbe readily detached for disassembly to ,permit more ready andcon'- venient packing and shipment of the instrument, for the purpose of permitting the barrel to be cleaned when the instrument is in use, for placement and replacement of a oat element,--and for any and all purposes as desired. The nozzle tube 25 is also readily and quickly and conveniently a sumcient distance to contact with and damage the temperature inuenced portion I5 of the temperature indicating means.

In the present instanceI have shown the coupling member 5 and the extension end member 8 as being of relatively larger diameter than the glass barrel 1, and it will thus be seen that the glass barrel is substantially protected ybythese extending portions so that as the instrument is laid down upon a table, bench or the like, and is otherwise handled, the glass barrel will not readily come in contact with any portions or surfaces to th`us be broken or cracked or. damaged. As.

the tube 25 extends laterally from the extensionend member 8, 'this tube will positively prevent and-preclude the instrument rolling or otherwise moving when placed ipon a table, even though. the portions 8, 5 and 2 be substantially circular in cross section, .and at the same time there are no protuberances or extensions which will in any1 way interfere with the free use and handlingnd storage or placement of the instrument in any place or location that may be desired.

With the thermo hydrometer constructedV in the manner` set forth, it is possible to completely v'is 5 tube 25,*the oat element l, and the liquid receiving barrel Ican each be packed and handled separately, and the individual user'ca'n readily assemble these 'parts and can as'conveniently disassemble the parts ii and when this is desired. As the thermometer is entirely encased and liquid can ow only through the passage or duct of the tube I9, a free and open way is provided for liquid to be taken in the liquidreceiving chamber or directly into the liquid barrel I, but in this passage 'the test quantity of liquid must flow around and iniiuence -the portion I6 of the thermometer I4, or other temperature inuenced structure, to show a quick and accurate reading of the temperature of the test quantity of liquid.

When theV instrument is in use, the entire instrument can be rested with the end 24 of the member 8 upon a radiator shell, or upon any other convenient supporting structure, and the instrument then stands absolutely steady, which allows the liquid barrel I to be held and maintained in substantially perpendicular relation and permits a most accurate reading.` Further,Y dirty and rusty or otherwise clouded radiator solution or other liquid being tested can never touch the face or any indicating portion of the thermometer or the Iscale sheet thereof. As the test quantity of liquid flowing to the liquid barrelmi where the specific gravity reading will be taken by the float ber 9, the thermometer isV influenced to give a quick and accurate reading of the temperature of the liquid, so that substantially at the instant suiiicient liquid is taken into the barrel i to inuence the oat ll, the temperaturev of the test quantity of liquid can be ascertained. As the barrel i is readily detachedfrom the coupling member E, the end3 of this barrel is thus freely accessible to permit cleaning, to allow removal and replacement of the oat, and for other purposes. With the coupling member 5 and the extension end member 8 formed in the manner shown and described and presenting a considerable mass of soft rubber or other cushion matethat many and variouschanges in the form,.

construction, arrangement, mounting, assembly and association of the parts canberesorted'to my invention.`

I claim: J

'barrel having a oat element therein and having 70 an intake end, a coupling member at the intake end of said barrel, suction means at the other 4end of said barrel, anextension housing connected at one end by said coupling member Il, must pass through the .liquid receiving chamy rial, these parts will not only prevent actual conf without departing 'from the spirit and scope of4 liquid receiving chamber, means to seal said extension housing to exclude liquid therefrom, a-

thermometer mounted with its indicating portion within the housing and having a temperature influenced portion within the liquid receiving chamber, and a lduct to conduct liquid through the sealed housing from said liquid receiving chamber to the liquid receiving barrel 4around and out of contact with indicatingfportions of the thermometer.

2. A thermo hydrometer comprising, a liquid receiving and iloat barrel having an intake end, a coupling member at the intake, end of said barrel, a transparent thermometer barrel connected at one end by said coupling at the intake the thermometer within the transparent barrel tending portion of the thermometer, and a tubeA leading through said sealed thermometer barrel to conduct liquid from said chamber to the liquidbarrel.

3. A thermo hydrometer comprising, a liquid barrel having an intake end, a float in said barrel,

means to draw liquid into said barrel, a coupling member at the intake end of said liquid barrel, a transparent thermometer barrel connected at one of its ends by said coupling at the intake end of the liquid barrel, closures for the ends of said transparent thermometer barrel, a thermometer held by said closures with its indicating portion housed and sealed within the transparent barrel and with a temperature influenced portion extending at the other end .of the transparent barrel, an extension base member fitted at the said other end of said transparent thermometer barrel provided with a liquidreceiving chamber around said temperature influenced portion of the thermometer and ha'ving a liquid intake leading to said liquidrcceiving chamber, and a tube extending through the closures and through the thermometer barrel to conduct liquid from said liquid receiving chamber to the liquid barrel.k

4l. A thermo hydrometer comprising, a liquid.

` held by said plosures with its indicating portion housed and sealed within the transparent barrel y `and with a temperature inuenced portion extending at the other end `of the transparent barrel, an extension base member fitted at the said other end of said transparent',V thermometer barrel provided with a liquid receiving chamber the thermometer and having a liquid intake leading to said liquidreceiving chamber, a tube ex'- tending through the closures and through the thermometer barrel to conduct liquid from said liquid receiving chamber to the liquid barrel, and a thermometer scale sheet within said transparent barrel adjacent tothe indicating portion of the thermometer.

around said temperature influenced portion of 5. A thermometer for a hydrometer comprising, a body structure having a tubular transparent portion, a pair of stopper portions tted in liquid-tight spaced relation 'in said tubular 5 transparent portion, a thermometer carried by said stopper portions with its indicating portion therebetween and a temperature inuenced portion exposed outside, and a liquid conducting tube extending through the tubular transparent v110 portion and between said stopper portions and `opening at its ends on the outer sides of said4 25 below the thermometer housing portion thereof through saidv housing portion to the body structure above said housing portion and leaving the space within the transparent thermometer housing portion of the body structure dry, and a thermometer carried by said stopper portions withan indicating portion in the dry space and a temperature responsive portion exposed to vthe liquid drawn into the body structure. e

7. A thermo hydrometer comprising a liqui receiving and noat barrel having an intake end, means to draw liquid into the barrel, a coupling member at the intake end of said barrel, a transparent extension housing through which liquid is drawn connected at one end to the barrelV byI 40 said coupling member, liquid intake means at the opposite end of said extension housing, and temperature responsive means in said extension housing having an indicating portion visible y through the transparent housing wall.Y

8. A thermo hydrometer comprising -an elongated tubular transparent liquid receiving and float barrel having an intake end, means to draw liquid into said barrel, a coupling member atV the intake end of the barrel, a tubular trans- .50 parent extension housing through which liquid is drawn connected at' one of its ends by said coupling at the intake end of the barrel, an end member connected at the opposite end of the extension housing, a liquid intake nozzle ex- 55 tending from the end member, and temperature responsive means in said extension housing having an indicating portion visible through the transparent housing wall.

9. A thermo hydrometer comprising an elon- 60 gated tubular transparent liquid receiving and oat barrel having an intake end, means to draw liquid into said barrel, a yieldable coupling member at the intake end of the barrel, a tubular transparent extension housing through which t5 liquid is drawn connected at one of its ends by said yieldable coupling member at the intake end of the barrel, an end member tted at and closing the opposite end of the housing and having aliquid passage leading into s'aid housing, and i0 temperature responsive means in said housing having an indicating portion visible through-the transparent housing wall.

10. A thermo hydrometer comprising a trans-l parent body structure, means to draw liquid in to 75 the body structure, spaced stopper portions fitted annalisa num-tight within the body structure. a, :liquid conducting passage portion extending -betweenV the stopper portions and opening on vthe outer sides thereof leaving dry the space within the body structure between said stopper portions and outsidesaid passage and temperature responsive means carried by said stopper portions with an indicating portion in the dry space and a temperature influenced portion exposed to the liquid drawn into the body structure.

11.` A thermo hydrometer comprising a transparent body structure, means to draw liquid into the body structure, stopper portions tted iiuidtight in spaced relation within the body structure, a liquid conducting passage portion eX- tending between the stopper portions and leaving the space around said passage portion and within the portion of said body structure between said stopper portions dry, a thermometer having an indicating portion in the dry space and a temperature inuenced portion outside of said dry space and exposed to lthe liquid drawn into the body structure, and scale carrying means in the dry portion of the transparent thermometer housing portion of the bodyvstructure adjacent to the temperature indicating portion of the thermometer.

12. In a hydrometer, a transparent barrel for receiving the liquid to be tested, a float in said barrel, mounting means for a thermometer in said barrel near the lower end thereof comprising enlarged end portions spaced apart and having sealing engagement with the interior of the barrel, and an intermediate portion connecting said enlargedend portions and having a passage through which liquid can iiow, said intermediate portion being of reduced size and cooperating with the inner wall of the barrel toV v define a dry chamber disposedbetweenthe enlarged end portions, and a thermometer in the barrel having a temperature indicating portion' test, and means providing a passage-way in said unit communicating with the upper and lower ends of said body forming means for the admission of a liquid therethrough to be indicated by the temperature indicating means.

14. In a device of the class described having a tubular transparent body and a. float arranged for vertical `movements therein, of a unit arranged within said bodybelow the oat therein and comprising spaced Huid-tight partition por-l .tions in said body, said unit comprising temperature indicating-means and means providing a passage-way therein communicating with each end of the tubular transparent body, said passage-way forming means for conducting a liquid under test in close proximity with the temperature indicating means.

15. In a hydrometer of the character described, a hydrometer barrel, a thermometer having a recording stem and a bulb end thereon and being positioned within and at near the lower end portion of said barrel, and means providing a passage-way therearound permitting the ow of liquid therethrough into the barrel, and means for sealing the recording zone of said thermometer from contact with the liquid tested while permitting the bulb end ,thereof to be contacted thereby.

16. In a device of the class described, having a tubular transparent body and the usual gauge oat arranged for vertical movements therein, of a temperature recording unit arranged to iit within said body below the oat thereinA and forming spaced partitions in said body, said temperature recording unit comprising, a thermometer having a scale coacting therewith, means providing a passage-way for a liquid -to be tested extending through said unit and in close proximity with the thermometer, and means at each end of the unit for sealing the same against contact with the liquid to be tested.

17. Temperature indicating means adapted for use in a hydrometer, comprising, a thermometer, partitioning means for supporting said thermometer substantially centrally of the body of the hydrometer at near one end thereof with the scale thereof between said partitioning means, and means providing a passage-way extending parallel with and in close proximity with the thermometer and communicating with the upper and lower ends of the hydrometer forming means for a liquid to be tested to pass said thermometer, while being drawn into the upper end of the hydrometer.

18. In a device of the class described, having a tubular transparent body and the usual gauge oat arranged for vertical movements therein, of a temperature recording unit having spaced partitioning elements arranged to flt within said body below the oat therein and to form a of said body to the upper portion thereof to be indicated by the temperature recording means.

19. A. temperature indicating means adapted vto be positioned within the barrel of a hydrometer, comprising, a unit having spaced partitioning elements and a thermometer and scale therebetween, and a tubular member extendingY through said partitioning elementsforming a passage-way through which a liquid drawn within the hydrometer may pass to the upper portion thereof, said passage-way being arranged to guide the liquid in close proximity with the thermometer to record the temperature thereof, the barrel of the hydrometer forming a shield to protect the thermometer from atmospheric changes. i

20. A unit adapted to be positioned within a hydrometer, comprising spaced apart resilient upper and'lower ends, a tubular portion extending between said spaced ends and opening at the outer sides thereof, and a thermometer having an indicating portion within the space between the upper and lower ends and outside of said tubular portion and having a temperature influenced portion exposed outside of said space.

2l. A thermometer fo'hydrometers comprising altubular transparent body portion, resilient upper and lower end portions disposed in spaced apart relation and liquid-tight iit within the transparent portion, a tubular liquid passage l.portion extending between said upperand lower end portions and opening on the .outer sides thereof, and a thermometer having an indicating portion housed between said upper and lower ends and provided with a temperature influenced portion exposed outside of the space as defined by said ends and the tubularportion and the transparent portion.

22. In a hydrometer, a transparent body structure in which liquid is to be taken to be tested, a float in said transparent body structure, and means for indicating .the temperature of liquid taken into said transparent body structure comprising a mounting for a thermometer, including spaced apart enlarged end .portions fitted inv fluid-tight engagement with the interior of the liquid receiving barrel and a liquid conducting passage portion of less diameter than the interior of the transparent body portion extending sage portion deiining a fluid-tight dry chamber,

and a thermometer having' a tempera-ture influencedA portion exposed to the liquid to be tested and having an indicating portion housed within the fluid-tight dry chamber.

- LEO EDELMANN. 

